python - 测试 Python 到 MySQL 错误

Question

我创建了一个小脚本，可以将数据保存到 MySQLdb。起初它在我使用时工作正常:

cursor.execute('INSERT INTO people (name, text) VALUES ("dan", "test2")')

上面的代码会将“dan”保存到标题中，将“test2”保存到文本中。我想测试一下我是否能够定义一些东西并以这种方式填充它。例如，如果我要抓取一个网站并说 (dan = soup.title.string) 或类似的东西，它将能够将这些数据填充到数据库中。我试图环顾四周，但似乎找不到任何东西。

import MySQLdb
import sys

try:
    db = MySQLdb.connect(
        host = 'localhost',
        user = 'root',
        passwd = '',
        db = 'python',
        )
except:
    print "db not found"

dan = "dandandan"
test2 = "testing101"

cursor = db.cursor()
cursor.execute('INSERT INTO people (name, text) VALUES (dan, test2)')
cursor.execute('SELECT * FROM people')
result = cursor.fetchall()
db.commit()
db.close()

我收到的错误是:

C:\Users\********\Desktop>python mysqltest.py
Traceback (most recent call last):
  File "mysqltest.py", line 18, in <module>
    cursor.execute('INSERT INTO people (name) VALUES (dan)')
  File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "C:\Python27\lib\site-packages\MySQLdb\connections.py", line 36, in defau
lterrorhandler
    raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (1054, "Champ 'dan' inconnu dans field list"
)

Answer 1

你需要使用参数。

cursor.execute('INSERT INTO people (name, text) VALUES (%s,%s)', (dan, test2))